Do I need a New Fuel Pump for my V6 to V8 conversion?
Thread Starter
Junior Member
iTrader: (1)
Joined: Aug 2006
Posts: 58
Likes: 0
From: Okinawa, Japan
Car: 1989 RS
Engine: 350 TBI
Transmission: 700R4 by Monster transmition
Axle/Gears: Borg warner 3.08 posi
Do I need a New Fuel Pump for my V6 to V8 conversion?
Ok so I dropped a V8 350 with a TBI injection (88 suburban injectors) into my 89 RS V6 2.8L car. I used the wiring harness out of a 91 5.0 TBI RS. It idels and starts fine but loses power as the RPMs climb.
Do I need a new fuel pump? If so witch one?
Do I need a new fuel pump? If so witch one?
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
In theory, no, but the only way to know if fuel delivery is your problem would be to get a pressure gage on it and see what happens when it acts up.
Banned
Joined: Jun 2006
Posts: 499
Likes: 0
From: Sherman, Tx - N. of Dallas
Car: Blue 89' RS
Engine: 5.7L
Transmission: 700r4
Axle/Gears: 3.42
Re: Do I need a New Fuel Pump for my V6 to V8 conversion?
what did you do to make the fuel pump come on for both injectors? have you adjusted your timing? i have the same conversion (kinda)... 89 2.8 to 5.7 92'. only 1 injector is firing, but i have to manually give it power, let me know what you did please.
TGO Supporter
Joined: Oct 2002
Posts: 9,067
Likes: 1
From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Do I need a New Fuel Pump for my V6 to V8 conversion?
At what RPM does the power start to drop? Stock TBI engines were never known for their high RPM power....
Thread
Thread Starter
Forum
Replies
Last Post
el_muerte
Engine/Drivetrain/Suspension Wanted
0
Sep 16, 2015 12:01 AM